Question

if the diameter of circle is 30m. find the area of circle.

Answer 1

Given,
d=30m
then,r=30/2m
Therefore,area of the circle=πr²
=22/7*30/2*30/2
=707.14m²

Answer 2

$area \: of \: circle = \pi {r}^{2}$
Area = 22/7 ×30/2×30/2
= 707.14 m^2